Steam-boiler furnace.



H. A. POPPENHUSEN L J. HARRINGTON.

` STEAM BOILBR FURNAGE.

` APPLICATION FILED APR. 12, 1909. 1,027,667, Patented May 28, 1912 3 SHEETS-SHEET 1. N -v H.- A. POPPENHUSEN & J. HARRINGTON. STEAM BOILBR PURNAGB.

I Y APPLICATION FILED APRJZ, 1999.

3 SHEETS-SHEET 2.

Patented May 28, 1912.

H. A. POPAPENHUSEN & J. HARRINGTON. STEAM BOILER FURNAGE. APPLICATION FILED Amma. 1909.

1,027,667: r Patented a 28,191.2;

3 SH S-SHEET 3.

WHW

C@ nl' l i v 0 UNITED strainsI Barnum oEEIoE.

HERMAN A'.lPoPPENHiIs EN, or EvANsTon, AND JOSEPH IIARRINe'roN, or `RIVERSIDE, ILLINOIS. r

STEAM-BOILER EUaNAoE.

l Application filed April 12.,

To all Vwhom t concern,

Be it known'that we, HERMAN A, PorrEN.- i

HUSENl and'JosErn HARRINGTON, citizens of tion.

I f the United States, and residents of Evanston and Riverside, respectively, in the county of Cook and State of Illinois, have y invented cert-ain new and useful Impr'ovement-s 1n Steam-,Boiler Furnaces; and we do hereby declare thatV the following is ya full, 10`

t arch'located over the -ire grate and arranged to direct the fuelgases over the burning fuel. in the combustion chamber in such-a way as to promote the combustion of the fuel gases. The improvements constituting our invention are applicable to furnaces provided withl automatic stoking devicesor meansby which the fuel is advanced through the combustion chamber as it burns; and the defleeting partition, Wall or -arch'is located the fuel feedin .Y passage from t e combustion chamber tothe -.Among the objects above the fuelfeeding or advancing grate in such manner that, the burning gases are directed forwardly over the fire bed toward end of the furnace in their smoke stack.'

of the invention is to provide a deflecting partition, wall or arch of this character which may be made of rela'- tively.- small depth or thickness so as to occupy. but little space in the furnace, and

. thereby enable the height of the furnace to be materially decreased;

Afurther object of the Invention is to provide a deflect-ing partition, wall or arch which is supported by tubular water cooled members, through whiclrwater to cool said members may be supplied eitheryfrom a boiler'above the furnace or from an external source.

A stilll Yfurther object of the'invention is tosimplify the-construction of the deflecting partit-ion, wall or-arch, to 4reduce the cost thereofmand; tohprovide-a simple arrange- -nient of lwater cooled supporting members :extending downwardly from the Specification-cf Lettersfl'atcnt. `f Patented May 28,1912'.

11909, serial' No. 489,290.

or girders for supporting-fthe arch lstruc- ;ture.

'Another object of the invention iste pro- E,

.Inotethecirculation of water throughthe' 'water cooled supporting membersv or gird-. l ers, whereby they may be maintained suitia'bly cool.

' lVehave herein shown our invent-ionas embodledin a furnace havingxa' traveling chain grate'l by which .alayer of fuel is fed` from the feed end ofthe furnace rearwardly,

-plied to furnaces having other orms :of

. grates arranged to advance the fuel through f l the furnace during combustion thereof.

L As shown inthe drawings Fi'gure 1 is a vert-ical, .longitudinal section of a boiler furnace provided with a dcflecting parti- Ition, wall or arch, embodying our invention, :take-n on line 1-1 of Fig. 2. Fig. 2 is a .horizont-alsection taken on-'the indirect' line -2-2 of Fig. l. Fig. 3 is a transverse verti.

cal section taken on line 3--3 of Fig. 2, looking rearwardly.

as a whole the front wall of the furnace;

1 1`the side walls thereof; 12 the fuel feed-` 4ing hopper at the vfront Wall; 13 the travellAs lshown'in the drawings, 16 designates' ing or chain grate upon which the fuel is 4fed 'and by which it is advanced into and Ithrough the furnace, and 14 designates the. 'bridge wallof the furnace located at. the. .rear of the grate. A vertically movable gate 1 5 controls the feed of the fuel from the hopper 12 to the'traveling grate.

The boiler herein shown is of that type comprisinga plurality of water tubes 17 yextending from front t0 rear of the furnace .and connected at their ends with front and rear headers 18 and 19, respectively, which :are adapted for connection with a water drum above, (not herein shown) the tubes andrearwardly front header 18 to the rear header 19.

20 designates, as a whole, the deiiecting' wall or arch extends forwardly and y11p-- :.paitition, wall or arch ofthe furnace to -which our invent-ion relates. Said partition,

.las Y in;` for the upward or outward passage of the prmilucts of combustion on their way to the smoke stack. The said dctlecting partition.A wall or arch may be employed with or without a coking breast or fire arch 2Q which, when employed, is located just in front, and above the forward end ot', the partition, wall or arch, and extends rearwardly from a lire brick wall Q3 which constitutes part of the front wall of the furnace above the fuel feed opening thereof.

'lfhe deficcting partition` wall or arch to which our present invention relates and the means for supporting the same are constructed and arraiiged as follows: The dctiecting partition, all or arch consists of a plurality of tubular, metal supporting members 24,24 arranged parallel with each oth'er and transversely of the furnace, and tire brick members QG, QG which extend between and are supported at their side margins on said supporting members. The supporting members are designed to bel cooled by circulation of.water or other cooling medium therethrough. They are supported at their ends on the side yallsI of the furnace and extend throughone side wall thereof (the right hand wall as herein shown) for connection, outside of the furnace, with circu- --means for firmly supporting theadjacent ends of the tubular supporting` members on the side wall. The supporting members may be inclosed by fire brick or tile coverings Q7 to protect the same from the heat of the furnace and to avoid cooling .of the heated gases by direct contact of the latter with the supporting members The members QG, which span the spaces between and are supported on the tubular members 24, 24, may be either fiator curved and are formed att-heir side margins to engage4 withI support- .ing surfaces on the sujiiporting members, or

on the fire brick coverings therefor, if such coverings be employed. As herein shown` the arch sections Q6 are inclined or beveled at their side edges and tit' correspondiugly inclined or beveled seats 2S at the opposite upper sides of the insulating coverings. The'arrangernent described places the arch members and the supporting portions of the insulating `:coverings under compression throughout: the' deftecting partition, wall orl The headers 25' bers. Suid filling extensions are herein shown as made integral parts of the arch members. Preferably, when such filling` extensions are employed, they will be made of slightly less width than the distance between adjoining stuiporting members or the insulatingcoverings thereof, thereby ac connnodating said parts to expansion without undue Referring now to the means herein shown for circulating` the cooling water through the hollow gir-ders Q5 to maintain the same suitably cool thesame are' made as follows: designates a tube which extends downwardly and forwardly from the rear or lower' boiler header 19 toward the bridge wall and is arranged to supply water to the tubular supporting members. Said tube may be one of the boiler tubes that is detiected or turned out of its usual position for this purpose. Said tube is carried outwardly through the adjacent side w: ll 1l of the furnace, it having an outward bend 3G which extends through said wall. The portion 37 of said tube which is located outside of said wall is arranged parallel to the wall and is connected exterior to the furnace wall by upwardly extending branches 40, 40 with the adjacent ends of alternate tubular supporting members 24. The other alternate tubular members are connected at their ends adjacent to the supply or distributingtube by upwardly extending branches 4Q, 42 with a discharge or collecting tube 43 located exterior to the side wall ofthe furnace. The said discharge or collecting tube 43 is provided at its forward end with an inwardly turned portion 44 which extends throughl the side wall of the furnace and is connected at its inner end within the furnace, with the lower side of the fronty 0r upper# niost boiler header 1S. The inlet and outlet branches 40 and 42 are detachably connected with the outer ends of the tubular supporting members by elbows or like fittings 46 to enable said branches to be readily disconnected from said support-ing members. The flow of the cooling water is from the lower or rear boiler header 19 through the tube 37, thence through the branches 40 to and through the alternate hollow supporting member 24 with .which said branches are connected; and the water returned through the connecting headers 2'5 and the other' alternate tubular support-ing members l portant practical advantage over the masto the branches 4t2 from whence it. is discharged through the collecting tube 4&3 to the upper front boiler header. By this arrangement it will be seen that the cooling water from the supply tube 37 passes to and fro through adjacent tubular supporting members. and thence directly through the return tube 43 to the front or upper boiler header.` Thus the tubular supporting members are connected tothe front and rear boiler headers through the medium of the ,supply and return tubes in parallel, which affords less resist-ance to the passage of the water through said supporting members than 1f said hollow gird'ers were connected to the supply and return tubes in series.

'ply tubes from the lower header thereof, andl The speedgf circulation of the cooling water through said tubular supportingr members is thus promoted.

. VIt will be observed that in the construction shown the water is circulated through the hollow girders under the boiler pres-- sure. Said gil-ders are maintained filled with water, the circulation therethrough is positive, the cooler water entering the supthe heated water passing from the return or collecting pipe to the upper header at a higher level. The water to cool the supporting members may, if desired, be supplied from a source external to the boiler.

The arrangement whereby the suppl y and return tubes are connected with the tubular supporting members exterior to the furnace wall is an advantage, inasmuch as it permits a ready disconnection of the said members from the supply and return tubes, and permits ready removal of the supporting members when it becomes necessary to replace one or more of them. Moreover, the exposure of the ends of the tubular supporting members at the exterior of the furnace wall permits the cleaning of the tubular members of incrustations that may form therein, and this may be effected by disconnecting the tubular supporting members from the branch supply and return pipe and inserting 'a cleaning implement into said tubular members.

It will be observed that the construction described provides' a d'eflecting partition, wall or arch of a minimum depth, while affording means for firmly supporting the det easing the depth of said partition, wall or i rch, as compared to prior pract1ce,we are enabled to materially decrease the height saire irl-position over the furnace grate. By

of the furnace, which is a great advantagel in point of construction and compactness. The construction described possesses 1mfurnace, not only because of the sive deflecting arch structure heretofore employed in furnaces which bridge'between and are supported on the side walls of the saving of space in the furnace and the lessening of the height of the furnace, but also because the arch is not so liable to break down by its -own weight, and while comparatively light its construction is such as to amply support it. Moreover, our improved arch is capable Of being more readily and economically repaired `than the prior massive arch structures. This is obvious from a consideration of the fact that the arch members are so supported on the gir-ders or supporting members as to be readily removed and replaced without the necessity of disturbing the structure of the whole, or any part thereof except the arch members to be removed and replaced. More over, the construction makes it possible to remove one or more of the supporting members or girders to repair or replace the same without the necessity of disturbing more than one of the arch members, one at each side of the supporting members or girders to be removed and replaced.

lVe claim asvour invention In a furnace, the combination with a combustion chamber and a grate, of a deflecting partition in said chamber embracing a plurality of horizontal, tubular, metal, watercooled supporting members, extending transversely between and supported by the side walls of the furnace, headers by which said supporting members are connected in pairs, said headers being embedded inv one side wall of. the furnace and the ends of said supportin g members being extended through the other side wall'ofthe furnace, supply and return pipes located exterior to the last named side wall of thefurnace, said supply and return pipes being located respectively below and above the ends of the supporting members ',and being inclined in a direction from the lower rear part of the furnace to the upper forward part of the same, and connecting pipes extending 'from one supporting member of each pair downwardlyto the supply pipe and-from the other supporting mem ber of each pair upwardly to the return pipe. In testimony as our .invention we the presence of two Witnesses, this of March A. D. 1,909.

HERMAN A. POPPENHUSEN. JOSEPH HARRNGTON. lVitnesses:

Geenen R. lViLKiNs, GUY M. CAMPBELL.

that we claim the foregoing affix our signatures in lt-)th day 

